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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文本缩进</title>
    <style>
        /* body{ text-indent: 100px;} */
        body{ text-indent: 1em;}
    </style>
</head>
<body>
    jiwdjijjidjwjdiwjdijwidjwijdijidjwijdwidjiwjdiwjdijwd<br/>
    jskdjksdjksjdksjkjskdjskdjwkdjks
</body>
</html>